The act of tapping or slapping the head of ones penis on the pubic region of a female including but not limited to: the Prepuce, Clitoris, Labia Menora, or Labia Majora. Derived from the sound a struggling trout makes while flopping around on land. One can replicate the sound of a trout slap by taking their index and middle finger and striking them across the palm of the opposite hand repeatedly.